Title :
Measurement of the gravitational constant with a mass comparator
Author :
Schlamminger, St ; Holzschuh, E. ; Kundig, W. ; Nolting, F. ; Pixley, R.E. ; Schurr, J. ; Straumann, U.
Author_Institution :
Phys. Inst., Univ. Zurich, Zurich
Abstract :
We have measured Newton´s gravitational constant with a commercially available mass comparator. In this experiment, the difference of the gravitational force of 13,600 kg mercury on two 1.1 kg copper masses was measured with a relative statistical uncertainty of 16.3times10-6. Including the systematic uncertainties we determine the gravitational constant G to be 6.674 252(122)times10-11 m3kg-1s-2.
Keywords :
comparators (circuits); copper; gravitational constant; mass measurement; measurement uncertainty; mercury (metal); Newton gravitational constant; copper masses; gravitational force; mass comparator; mercury; relative statistical uncertainty; systematic uncertainties; Calibration; Coils; Copper; Dynamic range; Force measurement; Gravity; Magnetic field measurement; Position measurement; Pressure measurement; Testing;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574623
